Time to drag this tired old thread out again...
I decided to purchase a couple of Lyen's 6 fet controllers for this bike recently. One reason is they are a lot smaller then the current controllers so they are going to fit better when I move them to their final locations. Another is that I like that they are programmable.
I spent a couple of hours removing the old controllers and mounting the new ones in the triangle. Took me about another hour to find a working hall and phase wire sequence. So it's up and running again and I've had several days of commuting on it.
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One problem that came up is that the throttle output from one of the halls in my dual hall setup is outside the range that the new controllers like. It causes one of them to not start due to the high throttle safety. It seems that the BMSbattery controllers I was using don't have that feature. I haven't verified this yet but I will do some testing when I get the chance as this is rather alarming. I thought all modern controllers had that feature.
I do know the day before I swapped controllers that when I plugged my pack in the bike tried to creep forward. The throttle had stuck just a little bit in the on position. At the time I didn't even think about what could have happened had it been WOT.
I will be able to fix the throttle with some resistors but for now if I leave that one unplugged until the controllers are powered up it works fine. Then when I plug it in the front motor tries to spin at about 10 rpm. If I'm sitting on the bike it's not a problem.
Next problem is a that the bike has cut off a few times just as I start accelerating. I haven't done any troubleshooting yet but I think it's either the controller cutting out due to battery sag below LVC. Or it's the BMS cutting power because amp draw is too high. To fix it I have to unplug the battery. Would I have to do that in either case?
I forgot to see if the watt meters were still powered up when it happened. That would tell me if it's the controller as opposed to the BMS.
I was hoping it would have a little more top end on the default settings but it's slower. It does have more torque now. Too much really as both the front and back wheels spin if I go WOT on takeoff. I will need different settings in each controller if I want to minimize wheel spin. It's going to be a lot of trail and error I'm sure.
In other news I ordered a rear YXM rear hub motor kit to put on my spare Mongoose frame.
I will use it as my commuter for a while so I can do some needed work on the Ibex. I have 2000 miles of pedalling and 2000 miles of motoring so it's about time I checked all the bearings and pivots for slop. I also need to get some custom spacers so I can install the rear air shock I've had for a while.
The First Friday party was fun as usual. As a bonus I found some neat cement trails that run along the San Antonio river heading south from the Blue Star Complex. Part of them are still blocked off as they are in the process of extending it further. I'll try to remember my video camera next time and get some shots along the path. I was the only Ebike there again.
Gary
